Selecting quality services over the Internet is tedious because it requires looking up of potential services, and yet the qualities of these services may evolve with time. Existing techniques have not studied the contextual effect of service composition with a view to selecting better member...

We reformulate Grandmont's and its successors' notion of behavioral heterogeneity such as to get the exact insensitivity of the aggregate budget share function with respect to changes in prices and income, instead of a mere approximate insensitivity. We propose a non parametric set-up such that,...